/**
 * @import lib/oz.js
 * @import lib/jquery.js
 * @import mod/lang.js
 * @import mod/stick.js
 */
define('mod/colorpicker', ['lib/jquery', 'mod/lang', 'mod/stick'], function($, _, stick){

    /**
     * jQuery Color picker
     * original author: Stefan Petre www.eyecon.ro
     * modified by dexter.yy
     */
    var ids = {},
        inAction,
        charMin = 65,
        visible,
        tpl = '<div class="colorpicker"><div class="colorpicker_color"><div><div></div></div></div><div class="colorpicker_hue"><div></div></div><div class="colorpicker_new_color"></div><div class="colorpicker_current_color"></div><div class="colorpicker_hex"><input type="text" maxlength="6" size="6" /></div><div class="colorpicker_rgb_r colorpicker_field"><input type="text" maxlength="3" size="3" /></div><div class="colorpicker_rgb_g colorpicker_field"><input type="text" maxlength="3" size="3" /></div><div class="colorpicker_rgb_b colorpicker_field"><input type="text" maxlength="3" size="3" /></div><div class="colorpicker_hsb_h colorpicker_field"><input type="text" maxlength="3" size="3" /></div><div class="colorpicker_hsb_s colorpicker_field"><input type="text" maxlength="3" size="3" /></div><div class="colorpicker_hsb_b colorpicker_field"><input type="text" maxlength="3" size="3" /></div><div class="colorpicker_submit">确定</div></div>',
        defaults = {
            eventName: 'click',
            onShow: function () {},
            onBeforeShow: function(){},
            onHide: function () {},
            onChange: function () {},
            onSubmit: function () {},
            color: 'ff0000',
            livePreview: true,
            flat: false
        },
        fillRGBFields = function  (hsb, cal) {
            var rgb = HSBToRGB(hsb);
            $(cal).data('colorpicker').fields
                .eq(1).val(rgb.r).end()
                .eq(2).val(rgb.g).end()
                .eq(3).val(rgb.b).end();
        },
        fillHSBFields = function  (hsb, cal) {
            $(cal).data('colorpicker').fields
                .eq(4).val(hsb.h).end()
                .eq(5).val(hsb.s).end()
                .eq(6).val(hsb.b).end();
        },
        fillHexFields = function (hsb, cal) {
            $(cal).data('colorpicker').fields
                .eq(0).val(HSBToHex(hsb)).end();
        },
        setSelector = function (hsb, cal) {
            $(cal).data('colorpicker').selector.css('backgroundColor', '#' + HSBToHex({h: hsb.h, s: 100, b: 100}));
            $(cal).data('colorpicker').selectorIndic.css({
                left: parseInt(150 * hsb.s/100, 10),
                top: parseInt(150 * (100-hsb.b)/100, 10)
            });
        },
        setHue = function (hsb, cal) {
            $(cal).data('colorpicker').hue.css('top', parseInt(150 - 150 * hsb.h/360, 10));
        },
        setCurrentColor = function (hsb, cal) {
            $(cal).data('colorpicker').currentColor.css('backgroundColor', '#' + HSBToHex(hsb));
        },
        setNewColor = function (hsb, cal) {
            $(cal).data('colorpicker').newColor.css('backgroundColor', '#' + HSBToHex(hsb));
        },
        keyDown = function (ev) {
            var pressedKey = ev.charCode || ev.keyCode || -1;
            if ((pressedKey > charMin && pressedKey <= 90) || pressedKey == 32) {
                return false;
            }
            var cal = $(this).parent().parent();
            if (cal.data('colorpicker').livePreview === true) {
                change.apply(this);
            }
        },
        change = function (ev) {
            var cal = $(this).parent().parent(), col;
            if (this.parentNode.className.indexOf('_hex') > 0) {
                cal.data('colorpicker').color = col = HexToHSB(fixHex(this.value));
            } else if (this.parentNode.className.indexOf('_hsb') > 0) {
                cal.data('colorpicker').color = col = fixHSB({
                    h: parseInt(cal.data('colorpicker').fields.eq(4).val(), 10),
                    s: parseInt(cal.data('colorpicker').fields.eq(5).val(), 10),
                    b: parseInt(cal.data('colorpicker').fields.eq(6).val(), 10)
                });
            } else {
                cal.data('colorpicker').color = col = RGBToHSB(fixRGB({
                    r: parseInt(cal.data('colorpicker').fields.eq(1).val(), 10),
                    g: parseInt(cal.data('colorpicker').fields.eq(2).val(), 10),
                    b: parseInt(cal.data('colorpicker').fields.eq(3).val(), 10)
                }));
            }
            if (ev) {
                fillRGBFields(col, cal.get(0));
                fillHexFields(col, cal.get(0));
                fillHSBFields(col, cal.get(0));
            }
            setSelector(col, cal.get(0));
            setHue(col, cal.get(0));
            setNewColor(col, cal.get(0));
            cal.data('colorpicker').onChange.apply(cal, [col, HSBToHex(col), HSBToRGB(col)]);
        },
        blur = function (ev) {
            var cal = $(this).parent().parent();
            cal.data('colorpicker').fields.parent().removeClass('colorpicker_focus')
        },
        focus = function () {
            charMin = this.parentNode.className.indexOf('_hex') > 0 ? 70 : 65;
            $(this).parent().parent().data('colorpicker').fields.parent().removeClass('colorpicker_focus');
            $(this).parent().addClass('colorpicker_focus');
        },
        downHue = function (ev) {
            var current = {
                cal: $(this).parent(),
                y: $(this).offset().top
            };
            current.preview = current.cal.data('colorpicker').livePreview;
            $(document).bind('mouseup', current, upHue);
            $(document).bind('mousemove', current, moveHue);
        },
        moveHue = function (ev) {
            change.apply(
                ev.data.cal.data('colorpicker')
                    .fields
                    .eq(4)
                    .val(parseInt(360*(150 - Math.max(0,Math.min(150,(ev.pageY - ev.data.y))))/150, 10))
                    .get(0),
                [ev.data.preview]
            );
            return false;
        },
        upHue = function (ev) {
            moveHue(ev);
            fillRGBFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            fillHexFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            $(document).unbind('mouseup', upHue);
            $(document).unbind('mousemove', moveHue);
            return false;
        },
        downSelector = function (ev) {
            var current = {
                cal: $(this).parent(),
                pos: $(this).offset()
            };
            current.preview = current.cal.data('colorpicker').livePreview;
            $(document).bind('mouseup', current, upSelector);
            $(document).bind('mousemove', current, moveSelector);
        },
        moveSelector = function (ev) {
            change.apply(
                ev.data.cal.data('colorpicker')
                    .fields
                    .eq(6)
                    .val(parseInt(100*(150 - Math.max(0,Math.min(150,(ev.pageY - ev.data.pos.top))))/150, 10))
                    .end()
                    .eq(5)
                    .val(parseInt(100*(Math.max(0,Math.min(150,(ev.pageX - ev.data.pos.left))))/150, 10))
                    .get(0),
                [ev.data.preview]
            );
            return false;
        },
        upSelector = function (ev) {
            moveSelector(ev);
            fillRGBFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            fillHexFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            $(document).unbind('mouseup', upSelector);
            $(document).unbind('mousemove', moveSelector);
            return false;
        },
        enterSubmit = function (ev) {
            $(this).addClass('colorpicker_focus');
        },
        leaveSubmit = function (ev) {
            $(this).removeClass('colorpicker_focus');
        },
        clickSubmit = function (ev) {
            var cal = $(this).parent();
            var col = cal.data('colorpicker').color;
            cal.data('colorpicker').origColor = col;
            setCurrentColor(col, cal.get(0));
            cal.data('colorpicker').onSubmit(col, HSBToHex(col), HSBToRGB(col));
        },
        show = function (target, fn, clock) {
            var t = target || this;
            var cal = $('#' + $(this).data('colorpickerId'));
            if(fn)
                cal.data('colorpicker').onSubmit = fn;
            cal.data('colorpicker').onBeforeShow.apply(this, [cal.get(0)]);
            if (cal.data('colorpicker').onShow.apply(this, [cal.get(0)]) != false) 
                cal.fadeIn();
            stick(t, cal[0], clock);
            $(document).bind('mousedown', {cal: cal}, hide);
            return false;
        },
        hide = function (ev) {
            var cal = false;
            if(!ev.target) {
                cal = ev;
            } else if (!isChildOf(ev.data.cal.get(0), ev.target, ev.data.cal.get(0))) {
                if (ev.data.cal.data('colorpicker').onHide.apply(this, [ev.data.cal.get(0)]) != false) 
                    cal = ev.data.cal;
            }       
            if(cal){
                cal.hide();
                $(document).unbind('mousedown', hide);
            }   
        },
        isChildOf = function(parentEl, el, container) {
            if (parentEl == el) {
                return true;
            }
            if (parentEl.contains) {
                return parentEl.contains(el);
            }
            if ( parentEl.compareDocumentPosition ) {
                return !!(parentEl.compareDocumentPosition(el) & 16);
            }
            var prEl = el.parentNode;
            while(prEl && prEl != container) {
                if (prEl == parentEl)
                    return true;
                prEl = prEl.parentNode;
            }
            return false;
        },
        fixHSB = function (hsb) {
            return {
                h: Math.min(360, Math.max(0, hsb.h)),
                s: Math.min(100, Math.max(0, hsb.s)),
                b: Math.min(100, Math.max(0, hsb.b))
            };
        }, 
        fixRGB = function (rgb) {
            return {
                r: Math.min(255, Math.max(0, rgb.r)),
                g: Math.min(255, Math.max(0, rgb.g)),
                b: Math.min(255, Math.max(0, rgb.b))
            };
        },
        fixHex = function (hex) {
            var len = 6 - hex.length;
            if (len > 0) {
                var o = [];
                for (var i=0; i<len; i++) {
                    o.push('0');
                }
                o.push(hex);
                hex = o.join('');
            }
            return hex;
        }, 
        HexToRGB = function (hex) {
            hex = parseInt(((hex.indexOf('#') > -1) ? hex.substring(1) : hex), 16);
            return {r: hex >> 16, g: (hex & 0x00FF00) >> 8, b: (hex & 0x0000FF)};
        },
        HexToHSB = function (hex) {
            return RGBToHSB(HexToRGB(hex));
        },
        RGBToHSB = function (rgb) {
            var hsb = {};
            hsb.b = Math.max(Math.max(rgb.r,rgb.g),rgb.b);
            hsb.s = (hsb.b <= 0) ? 0 : Math.round(100*(hsb.b - Math.min(Math.min(rgb.r,rgb.g),rgb.b))/hsb.b);
            hsb.b = Math.round((hsb.b /255)*100);
            if((rgb.r==rgb.g) && (rgb.g==rgb.b)) hsb.h = 0;
            else if(rgb.r>=rgb.g && rgb.g>=rgb.b) hsb.h = 60*(rgb.g-rgb.b)/(rgb.r-rgb.b);
            else if(rgb.g>=rgb.r && rgb.r>=rgb.b) hsb.h = 60  + 60*(rgb.g-rgb.r)/(rgb.g-rgb.b);
            else if(rgb.g>=rgb.b && rgb.b>=rgb.r) hsb.h = 120 + 60*(rgb.b-rgb.r)/(rgb.g-rgb.r);
            else if(rgb.b>=rgb.g && rgb.g>=rgb.r) hsb.h = 180 + 60*(rgb.b-rgb.g)/(rgb.b-rgb.r);
            else if(rgb.b>=rgb.r && rgb.r>=rgb.g) hsb.h = 240 + 60*(rgb.r-rgb.g)/(rgb.b-rgb.g);
            else if(rgb.r>=rgb.b && rgb.b>=rgb.g) hsb.h = 300 + 60*(rgb.r-rgb.b)/(rgb.r-rgb.g);
            else hsb.h = 0;
            hsb.h = Math.round(hsb.h);
            return hsb;
        },
        HSBToRGB = function (hsb) {
            var rgb = {};
            var h = Math.round(hsb.h);
            var s = Math.round(hsb.s*255/100);
            var v = Math.round(hsb.b*255/100);
            if(s == 0) {
                rgb.r = rgb.g = rgb.b = v;
            } else {
                var t1 = v;
                var t2 = (255-s)*v/255;
                var t3 = (t1-t2)*(h%60)/60;
                if(h==360) h = 0;
                if(h<60) {rgb.r=t1; rgb.b=t2; rgb.g=t2+t3}
                else if(h<120) {rgb.g=t1; rgb.b=t2; rgb.r=t1-t3}
                else if(h<180) {rgb.g=t1; rgb.r=t2; rgb.b=t2+t3}
                else if(h<240) {rgb.b=t1; rgb.r=t2; rgb.g=t1-t3}
                else if(h<300) {rgb.b=t1; rgb.g=t2; rgb.r=t2+t3}
                else if(h<360) {rgb.r=t1; rgb.g=t2; rgb.b=t1-t3}
                else {rgb.r=0; rgb.g=0; rgb.b=0}
            }
            return {r:Math.round(rgb.r), g:Math.round(rgb.g), b:Math.round(rgb.b)};
        },
        RGBToHex = function (rgb) {
            var hex = [
                rgb.r.toString(16),
                rgb.g.toString(16),
                rgb.b.toString(16)
            ];
            $.each(hex, function (nr, val) {
                if (val.length == 1) {
                    hex[nr] = '0' + val;
                }
            });
            return hex.join('');
        },
        HSBToHex = function (hsb) {
            return RGBToHex(HSBToRGB(hsb));
        };

    var colorpicker = {
        init: function (options) {
            options = $.extend({}, defaults, options||{});
            if (typeof options.color == 'string') {
                options.color = HexToHSB(options.color);
            } else if (options.color.r != undefined && options.color.g != undefined && options.color.b != undefined) {
                options.color = RGBToHSB(options.color);
            } else if (options.color.h != undefined && options.color.s != undefined && options.color.b != undefined) {
                options.color = fixHSB(options.color);
            } else {
                return this;
            }
            options.origColor = options.color;
            
            if (!$(this).data('colorpickerId')) {
                var id = 'collorpicker_' + parseInt(Math.random() * 1000);
                $(this).data('colorpickerId', id);
                var cal = $(tpl).attr('id', id);
                if (options.flat) {
                    cal.appendTo(this).show();
                } else {
                    cal.appendTo(document.body);
                }
                options.fields = cal
                                    .find('input')
                                        .bind('keydown', keyDown)
                                        .bind('change', change)
                                        .bind('blur', blur)
                                        .bind('focus', focus);
                options.selector = cal.find('div.colorpicker_color').bind('mousedown', downSelector);
                options.selectorIndic = options.selector.find('div div');
                options.hue = cal.find('div.colorpicker_hue div');
                cal.find('div.colorpicker_hue').bind('mousedown', downHue);
                options.newColor = cal.find('div.colorpicker_new_color');
                options.currentColor = cal.find('div.colorpicker_current_color');
                cal.data('colorpicker', options);
                cal.find('div.colorpicker_submit')
                    .bind('mouseenter', enterSubmit)
                    .bind('mouseleave', leaveSubmit)
                    .bind('click', clickSubmit);
                fillRGBFields(options.color, cal.get(0));
                fillHSBFields(options.color, cal.get(0));
                fillHexFields(options.color, cal.get(0));
                setHue(options.color, cal.get(0));
                setSelector(options.color, cal.get(0));
                setCurrentColor(options.color, cal.get(0));
                setNewColor(options.color, cal.get(0));
                if (options.flat) {
                    cal.css({
                        position: 'relative',
                        display: 'block'
                    });
                } else {
                    $(this).bind(options.eventName, show);
                }
            }
        },
        showPicker: function(target, fn, clock) {
            if ($(this).data('colorpickerId')) {
                show.call(this, target, fn, clock);
            }
        },
        hidePicker: function(target) {
            if ($(this).data('colorpickerId')) {
                hide( $('#' + $(this).data('colorpickerId')) );
            }
        },
        setColor: function(col) {
            if (typeof col == 'string') {
                col = HexToHSB(col);
            } else if (col.r != undefined && col.g != undefined && col.b != undefined) {
                col = RGBToHSB(col);
            } else if (col.h != undefined && col.s != undefined && col.b != undefined) {
                col = fixHSB(col);
            } else {
                return this;
            }
            
            if ($(this).data('colorpickerId')) {
                var cal = $('#' + $(this).data('colorpickerId'));
                cal.data('colorpicker').color = col;
                cal.data('colorpicker').origColor = col;
                fillRGBFields(col, cal.get(0));
                fillHSBFields(col, cal.get(0));
                fillHexFields(col, cal.get(0));
                setHue(col, cal.get(0));
                setSelector(col, cal.get(0));
                setCurrentColor(col, cal.get(0));
                setNewColor(col, cal.get(0));
            }
            
        }
    };
    
    return colorpicker;

});
